74ACT139SJ集成电路（IC）的信号开关多路复用器解码器规格书PDF中文资料

General Description

The AC/ACT139 is a high-speed, dual 1-of-4 decoder/demultiplexer. The device has two independent decoders, each accepting two inputs and providing four mutually exclusive active-LOW outputs. Each decoder has an active-LOW Enable input which can be used as a data input for a 4-output demultiplexer. Each half of the AC/ACT139 can be used as a function generator providing all four minterms of two variables.

特性 Features

■ ICC reduced by 50

■ Multifunction capability

■ Two completely independent 1-of-4 decoders

■ Active LOW mutually exclusive outputs

■ Outputs source/sink 24 mA

■ ACT139 has TTL-compatible inputs